9715561023 has 64 divisors (see below), whose sum is σ = 16145740800. Its totient is φ = 5072855040.

The previous prime is 9715561019. The next prime is 9715561067. The reversal of 9715561023 is 3201655179.

It is not a de Polignac number, because 9715561023 - 2² = 9715561019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9715563023) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1452615 + ... + 1459287.

It is an arithmetic number, because the mean of its divisors is an integer number (252277200).

Almost surely, 2^9715561023 is an apocalyptic number.

9715561023 is a deficient number, since it is larger than the sum of its proper divisors (6430179777).

9715561023 is a wasteful number, since it uses less digits than its factorization.

9715561023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6832.

The product of its (nonzero) digits is 56700, while the sum is 39.

The square root of 9715561023 is about 98567.5454853168. The cubic root of 9715561023 is about 2133.8110573503.

The spelling of 9715561023 in words is "nine billion, seven hundred fifteen million, five hundred sixty-one thousand, twenty-three".